Merge "Use UserManagerInternal to avoid permission check" into udc-dev am: ec8f8272 am: 7941177c am: 1a3784bc am: ad422a4e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23389256



Change-Id: Iad9c380e3d6400d509b901e6d6a752629f129cfb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>